AM5728: QT application on specific wayland output

LarryParker

Part Number: AM5728

Hello,

I am using a custom board with the AM5728. Our BSP is based on PROCESSOR-SDK-LINUX-AM57X 6.0.

Our carrier board has a LCD panel and HDMI output - both of which have been configured and working properly. Previously I had disabled weston from interfering with HDMI, by adding a line in weston.ini to disable the HDMI output. I am now looking to manage HDMI with weston/wayland. Wayland does successfully start on both LCD and HDMI, with an extended monitor setup.

My question is: How can I start a QT application (QPA: Wayland-Egl) or a waylandsink gstreamer pipeline on a specific output programatically. I found that if I use a mouse, the application starts on the output which the mouse is currently active on, but our application does not use a mouse, and we need to have the application start on the specific desired output depending on the application.

Please let me know how this can be done, or point me in the right direction.

Thanks,

over 5 years ago

0 Krunal Bhargav34 over 5 years ago

TI__Mastermind 44615 points

Hello,

I am wondering if you have already referred to our video graphics test example. Unfortunately, the application does not utilize Weston/Wayland but it is capable of managing two displays in full screen mode.

Regards,
Krunal

0 LarryParker over 5 years ago in reply to Krunal Bhargav34

Intellectual 745 points

Hi Krunal,

I just had a look. This is not really a solution for us as it would complicate the development of the QT applications. From a QT development standpoint, using Wayland-Egl is much more preferred. We are looking for a solution which uses wayland.

Is there an API for configuring the Wayland-Egl backend?

Thanks,

0 Krunal Bhargav34 over 5 years ago in reply to LarryParker

TI__Mastermind 44615 points

Hello,

Unfortunately, we do not have any examples demonstrating multi-screen usage with Weston/Wayland. I highly encourage you to reach out to the Weston/QT community because TI does not create any APIs' for configuring the Wayland-Egl-Qt. Here are a couple of community responses and if it helps, feel free to reach out to the Weston mailing list:
1. https://wayland-devel.freedesktop.narkive.com/6XzmsY3c/random-window-position-with-desktop-shell

2. https://lists.freedesktop.org/archives/wayland-devel/2018-May/038191.html

Regards,
Krunal

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AM5728: QT application on specific wayland output